"foam brightens like the dogwood now" is an example of
a. consonance.
b. a metaphor.
c. a simile.
d. alliteration.

C. a simile.

Explanation:  

"Foam brightens like the dogwood now" is an example of a simile. A simile is a literary device which is used in the comparison. When a comparison is made between two things, person, or ideas with the help of the word 'like' or 'as' it is known as a simile. In the above sentence, the comparison has been made between 'foam' and 'dogwood' by using the word 'like'.  

Further Explanation:

Consonance, metaphor, simile, and alliteration all are the literary devices used in the literary work. They help the writer to draw his ideas in a much influential and appealing manner. Consonance is the repetition of the consonant sound in the words appearing in the same sentence. The vowel sounds in these words may be different but the consonant sound remains equivalent. A metaphor is a type of comparison made between two things which are very different from each other. There exist only one similarity between the two on which the comparison is made. The comparison in metaphor is not done by using the word 'like' or 'as'. Simile, on the other hand, is a direct comparison made by using the word 'like' or 'as'. Alliteration is the repetition of the consonant sound in the initial part of the similar words. It may appear in the stressed syllable of the words of the given phrase or sentence.

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Keywords:  

Consonance, metaphor, simile, alliteration, literary devices, vowel sound, consonant sound.

b.science

explanation:

a term is used to describe a sudden revelation in a short story is "showing forth".